Regular Closure Operators
This chapter is devoted to the notion of regular closure operator that can well claim to be the oldest concept in the theory of categorical closure operators. As a matter of fact, regular closure operators were invented before the current notion of closure operator was formulated. In order to deal with this important concept, we need to make a further assumption.
KeywordsAbelian Group Topological Space Normal Subgroup Closure Operator Full Subcategory
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